Heater and heating pool

ABSTRACT

Provided herein is a heater and a heating pool. The heater comprises a heating core that includes a first surface and a second surface arranged on the opposite side of the heating core. A first insulating housing is placed on the first surface and forms a first heat insulating chamber together with the first surface. The second insulating housing is placed on the second surface and forms a second heat insulating chamber together with the second surface, wherein the first heat insulating chamber and the second heat insulating chamber communicate with each other. The heater of the utility model has good insulation performance and can prevent the occurrence of electrical leakage, so that the safety performance of the heater is improved.

TECHNICAL FIELD

The utility model relates to the technical field of heating, inparticular to a heater and a heating pool.

BACKGROUND

Nowadays, recreational activities are popular with more and more people,and there are more and more products on the market. As an emergingrecreational product, the massage pool has gradually entered people'sdaily life. With the increasing improvement in the quality of life,users have higher and higher functional requirements for the massagepool. Most of the existing massage pools use a PTC (Positive TemperatureCoefficient) heater as its heating system. As heating in water isinvolved, no electrical leakage is allowed, otherwise there will be asafety hazard.

SUMMARY

An objective of the utility model is to improve safety performance of aheater. The utility model provides a heater and a heating pool.

In order to solve the above technical problems, an embodiment of theutility model discloses a heater, including: a heating core, including afirst surface and a second surface arranged on two opposite sides of theheating core; a first insulating housing, placed on the first surfaceand forming a first heat insulating chamber together with the firstsurface; and a second insulating housing, placed on the second surfaceand forming a second heat insulating chamber together with the secondsurface. The first heat insulating chamber communicates with the secondheat insulating chamber.

By adopting the above technical solution, when the heater is used toheat a fluid (for example, water), as water flows in the first heatinsulating chamber and the second heat insulating chamber and thus isheated, the heater has good insulation performance and can preventelectrical leakage, so that the safety performance of the heater isimproved.

According to another specific embodiment of the utility model, theheater further comprises an insulating layer. The insulating layercovers the heating core. The first insulating housing has an opening ina side facing the first surface, and the first surface serves as abottom of the first heat insulating chamber, so that a fluid flowinginto the first heat insulating chamber is capable of contacting theinsulating layer on the first surface. The second insulating housing hasan opening in a side facing the second surface, and the second surfaceserves as a bottom of the second heat insulating chamber, so that thefluid flowing into the second heat insulating chamber is capable ofcontacting the insulating layer on the second surface.

According to another specific embodiment of the utility model, theheating core extends along a length direction, and the first surface andthe second surface are arranged on two opposite sides of the heatingcore in a thickness direction. The first surface is provided with afirst pressing member and a second pressing member at an interval alongthe length direction, and the first insulating housing abuts against thefirst pressing member and the second pressing member respectively alongthe thickness direction; and/or the second surface is provided with athird pressing member and a fourth pressing member at an interval alongthe length direction, and the second insulating housing abuts againstthe third pressing member and the fourth pressing member respectivelyalong the thickness direction.

According to another specific embodiment of the utility model, the firstpressing member on the first surface has a first slope arranged at anacute angle with the first surface, and the second pressing member onthe first surface has a second slope arranged at an acute angle with thefirst surface. A third slope parallel to and abutting against the firstslope and a fourth slope parallel to and abutting against the secondslope are arranged in the first insulating housing, and the third slopeand the fourth slope of the first insulating housing are arrangedbetween the first slope of the first pressing member and the secondslope of the second pressing member along the length direction.

According to another specific embodiment of the utility model, the thirdpressing member on the second surface has a first slope arranged at anacute angle with the second surface, and the fourth pressing member onthe second surface has a second slope arranged at an acute angle withthe second surface. A third slope parallel to and abutting against thefirst slope and a fourth slope parallel to and abutting against thesecond slope are arranged in the second insulating housing, and thethird slope and the fourth slope of the second insulating housing arearranged between the first slope of the third pressing member and thesecond slope of the fourth pressing member along the length direction.

According to another specific embodiment of the utility model, a firstseparating member is arranged in the first insulating housing, and thefirst separating member extends along the length direction and separatesthe first heat insulating chamber into relatively independent heatinsulating chamber.

According to another specific embodiment of the utility model, the firstinsulating housing has a first inner wall and a second inner wallarranged oppositely along a width direction, and the first inner wall,the second inner wall and two ends of the first separating member in thelength direction are respectively provided with the third slope and thefourth slope.

According to another specific embodiment of the utility model, a secondseparating member is arranged in the second insulating housing, and thesecond separating member extends along the length direction andseparates the second heat insulating chamber into relatively independentheat insulating chamber.

According to another specific embodiment of the utility model, thesecond insulating housing has a first inner wall and a second inner wallarranged oppositely along the width direction, and the first inner wall,the second inner wall and two ends of the second separating member inthe length direction are respectively provided with the third slope andthe fourth slope.

According to another specific embodiment of the utility model, theheating core includes a PTC ceramic heating piece, electrode slicesarranged on two opposite sides of the PTC ceramic heating piece, and aninsulating layer covering the PTC ceramic heating piece and theelectrode slices.

According to another specific embodiment of the utility model, theinsulating layer comprises a polyimide film insulating layer.

According to another specific embodiment of the utility model, along thelength direction of the heater, the first insulating housing hasopenings at two ends, the second insulating housing has openings at twoends, and the openings of the first insulating housing and the secondinsulating housing on the same side of the heater in the lengthdirection communicate with each other through a pipe, so that the firstheat insulating chamber communicates with the second heat insulatingchamber.

This application further provides a heating pool comprising a heater asdescribed in any of the above.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a stereogram of a heater in accordance with anembodiment of the present utility model;

FIG. 2 illustrates a top view of the heater in accordance with anembodiment of the utility model;

FIG. 3 illustrates a sectional view of the heater in accordance with anembodiment of the utility model; and

FIG. 4 illustrates a three-dimensional exploded view of the heater inaccordance with an embodiment of the utility model.

DETAILED DESCRIPTION

Implementations of the present utility model are described below withparticular specific embodiments and other advantages and effects of theutility model will be readily apparent to those skilled in the art fromthe disclosure of this specification. Although the description of thepresent utility model will be introduced in conjunction with preferredembodiments, it is not intended that the features of the utility modelare limited to the embodiments. On the contrary, the purpose ofintroducing the utility model in combination with the embodiments is tocover other options or modifications that may be extended based on theclaims of the present utility model. In order to provide a deepunderstanding of the present utility model, many specific details willbe included in the following description. The utility model may also beimplemented without these details. Further some specific details will beomitted in the description in order to avoid confusing or obscuring theemphasis of the present utility model. It should be noted that theembodiments in the present utility model and the features in theembodiments can be combined with each other without conflict.

It should be noted that in this specification, similar referencenumerals and letters indicate similar items in the following drawings,and therefore, once an item is defined in a drawing, it is not necessaryto further define and explain it in the subsequent drawings.

In the description of the embodiments, it should be noted that anorientation or positional relationship indicated by the term “upper”,“lower”, “inner”, “bottom” and the like is based on the orientation orpositional relationship shown in the drawings, or the usual orientationor positional relationship of a product of the utility model when it isused, is only for the convenience of describing the utility model andsimplifying the description, and does not indicate or imply that theapparatus or element referred to must have a specific orientation, beconstructed and operate in a specific orientation, so it cannot beunderstood as a limitation to the utility model.

The terms “first” and “second”, etc. are used only to distinguishdescriptions and cannot be understood to indicate or imply relativeimportance.

In the description of the embodiments, it should also be noted thatunless otherwise expressly specified and limited, the terms“arrangement” and “connection” should be understood in a broad sense,for example, the connection can be fixed connection, detachableconnection, or integrated connection; can be mechanical connection orelectrical connection; can be direct connection or indirect connectionthrough an intermediate medium, and can be the internal communication oftwo elements. For those of ordinary skill in the art, the specificmeaning of the above terms in the embodiments can be understoodaccording to the specific situation.

In order to make the objectives, technical solutions and advantages ofthe present utility model clearer, the embodiments of the presentutility model will be described in further detail below with referenceto the accompanying drawings.

Referring to FIG. 1 to FIG. 4 , the utility model provides a heater 1,including: a heating core 10, a first insulating housing 20 and a secondinsulating housing 30. The heating core 10 includes a first surface 11and a second surface 12 arranged on two opposite sides of the heatingcore 10. In the embodiment, the first surface 11 and the second surface12 are arranged on two opposite sides of the heating core 10 in athickness direction (Z-direction in FIG. 1 to FIG. 3 ). The firstinsulating housing 20 is placed on the first surface 11 and forms afirst heat insulating chamber 21 together with the first surface 11 ofthe heating core 10. The second insulating housing 30 is placed on thesecond surface 12 and forms a second heat insulating chamber 31 togetherwith the second surface 12 of the heating core 10. The first heatinsulating chamber 21 communicates with the second heat insulatingchamber 31. The connection manner of the first insulating housing 20 andthe second insulating housing 30 with the heating core 10 is notlimited, and for example, the connection manner of the first insulatinghousing 20 and the second insulating housing 30 with the heating core 10may be sealed connection through a bolt and a sealing ring.

In this application, the heater 1 uses the first insulating housing 20and the second insulating housing 30, thereby forming the first heatinsulating chamber 21 and the second heat insulating chamber 31. Whenthe heater 1 is used to heat a fluid (for example, water), as waterflows in the first heat insulating chamber 21 and the second heatinsulating chamber 31 and thus is heated, the heater 1 has goodinsulation performance to realize isolation between water andelectricity, which prevents electrical leakage, so that the safetyperformance of the heater 1 is improved.

It should be noted that materials of the first insulating housing 20 andthe second insulating housing 30 are not limited, as long as electricalinsulation can be realized. For example, in the embodiment, the firstinsulating housing 20 and the second insulating housing 30 are bothplastic housing.

In some possible embodiments, with continued reference to FIG. 1 to FIG.4 , the heater 1 further includes an insulating layer 16. The insulatinglayer 16 covers the heating core 10, so that the heating core 10 isinsulated, that is, the first surface 11 and the second surface 12 ofthe heating core 10 are both insulated. The insulating layer 16 is notlimited by type, for example, in the embodiment, the insulating layer 16may be a polyimide film insulating layer 16.

The first insulating housing 20 has an opening in a side facing thefirst surface 11, and the first surface 11 serves as a bottom of thefirst heat insulating chamber 21. That is, walls of the first insulatinghousing 20 and the first surface 11 of the heating core 10 together formthe first heat insulating chamber 21. The second insulating housing 30has an opening in a side facing the second surface 12, and the secondsurface 12 serves as a bottom of the second heat insulating chamber 31.That is, the walls of the second insulating housing 30 and the secondsurface 12 of the heating core 10 together form the second heatinsulating chamber 31.

Since the first insulating housing 20 has the opening in the side facingthe first surface 11, the second insulating housing 30 has the openingin the side facing the second surface 12, and the heating core 10 isinsulated, the fluid flowing into the first heat insulating chamber 21is capable of fully contacting the insulating layer 16 on the firstsurface 11, and the fluid flowing into the second heat insulatingchamber 31 is capable of fully contacting the insulating layer 16 on thesecond surface 12, so that the heating efficiency of the fluid beingheated in the heat insulating chambers is improved and the heatutilization rate is also high.

In some possible embodiments, with continued reference to FIG. 1 to FIG.4 , the heating core 10 extends along a length direction (X-direction inFIG. 1 to FIG. 4 ), and the first surface 11 and the second surface 12of the heating core 10 are arranged on two opposite sides of the heatingcore 10 in the thickness direction (Z-direction in FIG. 1 to FIG. 3 ).The first surface 11 of the heating core 10 is provided with a firstpressing member 111 and a second pressing member 112 at an intervalalong the length direction, and the first insulating housing 20 abutsagainst the first pressing member 111 and the second pressing member 112respectively along the thickness direction. Optionally, the firstpressing member 111 and the second pressing member 112 respectivelyextend along a width direction (Y-direction in FIG. 1 and FIG. 2 ) ofthe heating core 10. After the first insulating housing 20 abuts againstthe first pressing member 111 and the second pressing member 112respectively, the leakproofness of the first insulating housing 20 withthe first pressing member 111 and the second pressing member 112 can beimproved. For example, the first pressing member 111 and the secondpressing member 112 are plastic pressing members.

In some possible embodiments, the second surface 12 is provided with athird pressing member 121 and a fourth pressing member 122 at aninterval along the length direction, and the second insulating housing30 abuts against the third pressing member 121 and the fourth pressingmember 122 respectively along the thickness direction. Optionally, thethird pressing member 121 and the fourth pressing member 122respectively extend along the width direction (Y-direction in FIG. 1 andFIG. 2 ) of the heating core 10. After the second insulating housing 30abuts against the third pressing member 121 and the fourth pressingmember 122 respectively, the leakproofness of the second insulatinghousing 30 with the third pressing member 121 and the fourth pressingmember 122 can be improved. For example, the third pressing member 121and the fourth pressing member 122 are plastic pressing members.

In the embodiment, the first surface 11 is provided with the firstpressing member 111 and the second pressing member 112, and the secondsurface 12 is provided with the third pressing member 121 and the fourthpressing member 122. In some possible embodiments, the first surface 11is provided with the first pressing member 111 and the second pressingmember 112, or the second surface 12 is provided with the third pressingmember 121 and the fourth pressing member 122.

As shown in FIG. 3 and FIG. 4 , the first pressing member 111 on thefirst surface 11 has a first slope 1111 arranged at an acute angle withthe first surface 11 (as shown in FIG. 3 , a side surface of the firstpressing member 111 is triangular), and the second pressing member 112on the first surface 11 has a second slope 1121 arranged at an acuteangle with the first surface 11 (as shown in FIG. 3 , a side surface ofthe second pressing member 112 is triangular). A third slope (having thesame structure as a third slope 34 of the second insulating housing 30)parallel to and abutting against the first slope 1111 and a fourth slope(having the same structure as a fourth slope 35 of the second insulatinghousing 30) parallel to and abutting against the second slope 1121 arearranged in the first insulating housing 20. Along the length direction,the third slope and the fourth slope of the first insulating housing 20are arranged between the first slope 1111 of the first pressing member111 and the second slope 1121 of the second pressing member 112.

On the one hand, the first insulating housing 20, when being mounted onthe heating core 10, can serve as a mounting guide, thereby facilitatingmounting. On the other hand, after the first insulating housing 20 ismounted on the heating core 10, the heating core 10 can limit the firstinsulating housing 20 in the length direction. Moreover, the firstinsulating housing 20 is in slope fit with the first pressing member 111and the second pressing member 112, so that the contact area isincreased, which better improves the leakproofness between the firstinsulating housing 20 and the heating core 10.

Similarly, the third pressing member 121 on the second surface 12 has afirst slope arranged at an acute angle with the second surface 12 (asshown in FIG. 3 , a side surface of the third pressing member 121 istriangular, and the first slope has the same structure as the firstslope 1111 of the first insulating housing 20), and the fourth pressingmember 122 on the second surface 12 has a second slope arranged at anacute angle with the second surface 12 (as shown in FIG. 3 , a sidesurface of the fourth pressing member 122 is triangular, and the secondslope has the same structure as the second slope 1121 of the firstinsulating housing 20). The third slope 34 parallel to and abuttingagainst the first slope and the fourth slope 35 parallel to and abuttingagainst the second slope are arranged in the second insulating housing30. Along the length direction, the third slope 34 and the fourth slope35 of the second insulating housing 30 are arranged between the firstslope of the third pressing member 121 and the second slope of thefourth pressing member 122.

On the one hand, the second insulating housing 30, when being mounted onthe heating core 10, can serve as a mounting guide, thereby facilitatingmounting. On the other hand, after the second insulating housing 30 ismounted on the heating core 10, the heating core 10 can play the role oflimiting the second insulating housing 30 in the length direction.Moreover, the second insulating housing 30 is in slope fit with thethird pressing member 121 and the fourth pressing member 122, so thatthe contact area is increased, which better improves the leakproofnessbetween the second insulating housing 30 and the heating core 10.

With continued reference to FIG. 1 and FIG. 4 , a first separatingmember 22 is arranged in the first insulating housing 20, and the firstseparating member 22 extends along the length direction and separatesthe first heat insulating chamber 21 into relatively independent heatinsulating chamber. As shown in FIG. 1 and FIG. 4 , the number of thefirst separating member 22 is one, and accordingly, one first separatingmember 22 separates the first heat insulating chamber 21 into tworelatively independent heat insulating chamber. However, the number ofthe first separating members 22 is not limited in the presentapplication. In some possible embodiments, for example, the number ofthe first separating members 22 is two, three, etc.

The first insulating housing 20 has a first inner wall and a secondinner wall arranged oppositely along the width direction, and the firstinner wall, the second inner wall and two ends of the first separatingmember 22 in the length direction are respectively provided with thethird slope and the fourth slope. That is, the two ends inside the firstinsulating housing 20 in the length direction are provided with thethird slope and the fourth slope that are in slope fit with the firstpressing member 111 and the second pressing member 112, which saves thespace, and takes effects in the above three aspects.

With continued reference to FIG. 1 and FIG. 4 , a second separatingmember 32 is arranged in the second insulating housing 30, and thesecond separating member 32 extends along the length direction andseparates the second heat insulating chamber 31 into relativelyindependent heat insulating chamber. As shown in FIG. 1 and FIG. 4 , thenumber of the second separating members 32 is one, and accordingly, onesecond separating member 32 separates the second heat insulating chamber31 into two relatively independent heat insulating chamber. However, thenumber of the second separating member 32 is not limited in the presentapplication. In some possible embodiments, for example, the number ofthe first separating members 22 is two, three, etc.

The second insulating housing 30 has a first inner wall and a secondinner wall arranged oppositely along the width direction, and the firstinner wall, the second inner wall and two ends of the second separatingmember 32 in the length direction are respectively provided with thethird slope 34 and the fourth slope 35. That is, the two ends inside thesecond insulating housing 30 in the length direction are provided withthe third slope 34 and the fourth slope 35 that are in slope fit withthe third pressing member 121 and the fourth pressing member 122, whichsaves the space, and takes effects in the above three aspects.

In addition, the specific structure of the heating core 10 is notlimited in the present application, as long as it is sufficient toachieve the heating of the fluid to be heated. Generally, the heatingcore 10 includes a PTC ceramic heating piece and electrode slices. Theelectrode slices are fixed to the PTC ceramic heating piece by bonding,welding or covering with an insulating film. With reference to FIG. 1 ,FIG. 3 and FIG. 4 , in the embodiment, the heating core 10 includes aPTC ceramic heating piece 13, electrode slices 14 arranged on twoopposite sides of the PTC ceramic heating piece 13, wires 15 and theinsulating layer 16 covering the PTC ceramic heating piece and theelectrode slices. When the heater 1 works, and the electrode slices areenergized through the wires 15, the PTC ceramic heating piece generatesheat to heat the fluid flowing into the first heat insulating chamber 21and the second heat insulating chamber 31.

In addition, the type of the insulating layer 16 is not limited. Forexample, the insulating layer 16 may employ any one or more of thefollowing materials: a polyimide film, an insulating ceramic sheet, amica sheet, and other non-metal or semiconductor electrically-insulatingand heat-conducting materials.

With continued reference to FIG. 1 to FIG. 4 , along the lengthdirection of the heater 1, the first insulating housing 20 has openingsat two ends, including a first opening 23 and a second opening 24. Thesecond insulating housing 30 has openings at two ends, including a thirdopening 33 and a fourth opening 36. The first opening 23 of the firstinsulating housing 20 and the third opening 33 of the second insulatinghousing 30 are arranged on the same side of the heater 1 in the lengthdirection, and the second opening 24 of the first insulating housing 20and the fourth opening 36 of the second insulating housing 30 arearranged on the same side of the heater 1 in the length direction.

In the embodiment, the second opening 24 of the first insulating housing20 and the fourth opening 36 of the second insulating housing 30 on thesame side of the heater 1 in the length direction communicate with eachother through a pipe 40, so that the first heat insulating chamber 21communicates with the second heat insulating chamber 31. The secondopening 24 and the fourth opening 36 are each provided with a seal 41 atthe connection with the pipe 40 to prevent water leakage. FIG. 3 shows aflow direction of the fluid to be heated in the first heat insulatingchamber 21 and the second heat insulating chamber 31 of the heater 1. Asshown in FIG. 3 , the fluid to be heated flows from the first opening 23of the first insulating housing 20 into the first heat insulatingchamber 21, and flows into the second heat insulating chamber 31 throughthe pipe 40, and then flows out of the third opening 33 of the secondinsulating housing 30, thereby achieving that the fluid to be heatedcirculates in the heater 1 and thus is heated.

The present application further provides a heating pool, including theabove any heater 1.

While the present utility model has been illustrated and described withreference to certain preferred embodiments of the utility model, itshould be understood by those of ordinary skill in the art that theforegoing is a further detailed description of the utility model inconnection with the particular embodiments and the particular practiceof the utility model cannot be construed to be limited to thesedescriptions only. Those skilled in the art may make various changes inform and details including making several simple deductions orsubstitutions, without departing from the spirit and scope of theutility model.

What is claimed is:
 1. A heater, characterized by comprising: a heatingcore, comprising a first surface and a second surface arranged on twoopposite sides of the heating core; a first insulating housing, placedon the first surface and forming a first heat insulating chambertogether with the first surface; a second insulating housing, placed onthe second surface and forming a second heat insulating chamber togetherwith the second surface; wherein the first heat insulating chambercommunicates with the second heat insulating chamber; and an insulatinglayer, wherein the insulating layer covers the heating core, wherein thefirst insulating housing has an opening in a side facing the firstsurface, and the first surface serves as a bottom of the first heatinsulating chamber, so that a fluid flowing into the first heatinsulating chamber is capable of contacting the insulating layer on thefirst surface, wherein the second insulating housing has an opening in aside facing the second surface, and the second surface serves as abottom of the second heat insulating chamber, so that the fluid flowinginto the second heat insulating chamber is capable of contacting theinsulating layer on the second surface, wherein the heating core extendsalong a length direction, and the first surface and the second surfaceare arranged on two opposite sides of the heating core in a thicknessdirection, wherein the first surface is provided with a first pressingmember and a second pressing member at an interval along the lengthdirection, and the first insulating housing abuts against the firstpressing member and the second pressing member respectively along thethickness direction, and/or wherein the second surface is provided witha third pressing member and a fourth pressing member at an intervalalong the length direction, and the second insulating housing abutsagainst the third pressing member and the fourth pressing memberrespectively along the thickness direction, and wherein the firstpressing member on the first surface has a first slope arranged at anacute angle with the first surface, and the second pressing member onthe first surface has a second slope arranged at an acute angle with thefirst surface; and a third slope parallel to and abutting against thefirst slope and a fourth slope parallel to and abutting against thesecond slope are arranged in the first insulating housing, and the thirdslope and the fourth slope of the first insulating housing are arrangedbetween the first slope of the first pressing member and the secondslope of the second pressing member along the length direction. 2.(canceled)
 3. (canceled)
 4. (canceled)
 5. The heater according to claim1, characterized in that the third pressing member on the second surfacehas a first slope arranged at an acute angle with the second surface,and the fourth pressing member on the second surface has a second slopearranged at an acute angle with the second surface; and a third slopeparallel to and abutting against the first slope and a fourth slopeparallel to and abutting against the second slope are arranged in thesecond insulating housing, and the third slope and the fourth slope ofthe second insulating housing are arranged between the first slope ofthe third pressing member and the second slope of the fourth pressingmember along the length direction.
 6. The heater according to claim 1,characterized in that a first separating member is arranged in the firstinsulating housing, and the first separating member extends along thelength direction and separates the first heat insulating chamber intorelatively independent heat insulating chamber.
 7. The heater accordingto claim 6, characterized in that the first insulating housing has afirst inner wall and a second inner wall arranged oppositely along awidth direction, and the first inner wall, the second inner wall and twoends of the first separating member in the length direction arerespectively provided with the third slope and the fourth slope.
 8. Theheater according to claim 1, characterized in that a second separatingmember is arranged in the second insulating housing, and the secondseparating member extends along the length direction and separates thesecond heat insulating chamber into relatively independent heatinsulating chamber.
 9. The heater according to claim 8, characterized inthat the second insulating housing has a first inner wall and a secondinner wall arranged oppositely along a width direction, and the firstinner wall, the second inner wall and two ends of the second separatingmember in the length direction are respectively provided with the thirdslope and the fourth slope.
 10. The heater according to claim 1,characterized in that the heating core comprises a PTC ceramic heatingpiece, electrode slices arranged on two opposite sides of the PTCceramic heating piece, and an insulating layer covering the PTC ceramicheating piece and the electrode slices.
 11. The heater according toclaim 10, characterized in that the insulating layer comprises apolyimide film insulating layer.
 12. The heater according to claim 1,characterized in that along the length direction of the heater, thefirst insulating housing has openings at two ends, the second insulatinghousing has openings at two ends, and the openings of the firstinsulating housing and the second insulating housing on the same side ofthe heater in the length direction communicate with each other through apipe, so that the first heat insulating chamber communicates with thesecond heat insulating chamber.
 13. A heating pool, characterized bycomprising the heater according to claim
 1. 14. The heater according toclaim 5, characterized in that the heating core comprises a PositiveTemperature Coefficient (PTC) ceramic heating piece, electrode slicesarranged on two opposite sides of the PTC ceramic heating piece, and aninsulating layer covering the PTC ceramic heating piece and theelectrode slices.
 15. The heater according to claim 6, characterized inthat the heating core comprises a Positive Temperature Coefficient (PTC)ceramic heating piece, electrode slices arranged on two opposite sidesof the PTC ceramic heating piece, and an insulating layer covering thePTC ceramic heating piece and the electrode slices.
 16. The heateraccording to claim 8, characterized in that the heating core comprises aPositive Temperature Coefficient (PTC) ceramic heating piece, electrodeslices arranged on two opposite sides of the PTC ceramic heating piece,and an insulating layer covering the PTC ceramic heating piece and theelectrode slices.
 17. The heater according to claim 5, characterized inthat along the length direction of the heater, the first insulatinghousing has openings at two ends, the second insulating housing hasopenings at two ends, and the openings of the first insulating housingand the second insulating housing on the same side of the heater in thelength direction communicate with each other through a pipe, so that thefirst heat insulating chamber communicates with the second heatinsulating chamber.
 18. The heater according to claim 6, characterizedin that along the length direction of the heater, the first insulatinghousing has openings at two ends, the second insulating housing hasopenings at two ends, and the openings of the first insulating housingand the second insulating housing on the same side of the heater in thelength direction communicate with each other through a pipe, so that thefirst heat insulating chamber communicates with the second heatinsulating chamber.
 19. The heater according to claim 8, characterizedin that along the length direction of the heater, the first insulatinghousing has openings at two ends, the second insulating housing hasopenings at two ends, and the openings of the first insulating housingand the second insulating housing on the same side of the heater in thelength direction communicate with each other through a pipe, so that thefirst heat insulating chamber communicates with the second heatinsulating chamber.